Scale your cluster

Docker UCP is designed for scaling horizontally as your applications grow in
size and usage. You can add or remove nodes from the UCP cluster to make it
scale to your needs.

Since UCP leverages the clustering functionality provided by Docker Engine,
you use the docker swarm join
command to add more nodes to your cluster. When joining new nodes, the UCP
services automatically start running in that node.

When joining a node to a cluster you can specify its role: manager or worker.